Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
A 45-year-old man with primary retroperitoneal malignant germ cell tumor. Axial noncontrast CT shows the untreated mass with internal calcification (arrowheads on left), which was confirmed as malignant germ cell tumor with extensive necrosis on core biopsy. Five years after neoadjuvant chemotherapy and partial resection, contrast-enhanced CT shows that the treated tumor is densely calcified with minimal visible soft-tissue component (arrowheads on right).
